Doorcheck



April 2, 1935. w. F. MOORE I DOORCHECK Filed Nov 18, 1951 a Sheets-Sheet 1 M5 WK a. N W

'April 2, 1935.

W. F. MOORE DOORCHECK Filed Nov. 18, 1931 3 Sheets-Sheet 2 /ATTORNEY.:

INVENTOR Wallace FMoore M mm A ril 2,1935. RMOORE I a 1,

DOORCHECK Filed Nov. 18 1931 s Sh eets -Sheet :5

INVENTOR Wallace: E Moore TT NEYs v Patented Apr. r "T i i i v r I p 'F @50 ghee); whmx-mofint'eaii-inthedo'er "To install the cheek inithe door-, the-upper i r landf door 'basing is Substantially"-coiicealed from .edg'dthreoi is mortised'isoltttorprovidelra recess 165' view.-"A nothr o'f tlil% otijects c if theinvention i's 32 for receivingltheiproi'ecting: portion-of the-5 15 a to provide a door check of the charactei ir-idi l'spring. chamber l4 andithe ears 3!]; withitheiside' catedwiiliibh 'is 's'iinpl in construction, may be i-zfi ofthetcasihg on both sides or shithpnojecting easily installed, and is efiicient in operation. portion engaging flat against the innerj side of The several features of the invention, whereby the door. The checkis held in place inthe door these and other objectsmayibe attained, will be by means of screws, 34 extending through aperl0- readily understood from the, following descriptures in the ears 33' and'screw-threaded'intothe tion and accompanying drawings, in which: lower end wall of the recess 32, and by screws 36 Figure 1 is a view in perspective of a portion which extend through apertures in the ends of of a door and; door casing having my improved the rectangular portion of the'check casing and check installed thereon; s

Fig. 2 is a sectional plan'view taken on-the After the check isthus applied, a sheetmetal 1mg z z f Fig. l showing-the door partly'open; casing or cover 38 is passed over the rectangular Fig. 3 is a similar vview showing the doorv outer portion of the casing and is secured in closed;' j place by screws 40 extending through apertures Fig. 4 is a sectional view, on an enlarged scale, in flan es t on. s cov c e y fit t e -20 taken on the line 4 4'of Fig ,3; outer ends, top and bottom sides of the check Fig; 5 is a sectional view taken on the line casing, Midis provided at'its upper end with p 5-5 of Fig. 2; and v 1 a I jeoting portions 42 extending into the recess 32 Fig. 6 is'a sectional view taken on the line d ove the c v r 4! of the spring: chamber |4 66 of Fig. 5. p :7 i said projecting portions 42 being spaced apart 25 My improved door check isshown i th draw- I to provide clearance of' the ratchetawheel ,l3. ings installedon a door 2 and door casing 3. The sp n actuated-arm PaWl'l5 e d In the illustrated construction the check is prover the upp W of h cover h O Q vided with a piston chamber 4, a double headed Side B recess 32 Closed by a G p a 44 piston 5 a rack 5 formed 1; piston a segwhich is secured by screws 45 to the door. r 30 mental pinion 8 operatively engaging the rack; The h b ween the Spring actuated. a pinion shaft I0, a cylindrical chamber I2, surarm 15 d the (1001 casing comprises a memb r rounding the pinion shaft o, 'a spiral spring I4 48 h v -p ojec r which receive the free mounted in the chamber and operatively conhf Said, arm between! them, and t0 Which the screw-threaded into the door. a 15f i i nected with the pinion shaft l0 through aratchet of t m is pivetally e ted- 1 35 I wheel l3 a d a pawl I5, and a spri g actuated member is mounted to slide n erred 50 charm l6 secured on the, upper end of the pinion is arranged ina'recess 52 in the upper horizontal",

shaft and carrying the pawl |5 a portionzof the door jamb, the ends of the rod The piston chamber is providedwith by-passes being cu i bracket e e 54 at the ends is associated with its ends; and valves w nd 22 of Said eun sweet the recess 4 Q associated with each of the by-passesfor-concovered, Strip plate 56 Secured the trolling the flow of fluid in the piston chamber, door casing by screwsiss' l the valve 20 being adapted to be adjusted to with this construction it l b a ent t. 7

allow relatively fast closing of the door to near when the (1001' s cl e e i e irely eon-' the latching point, whereupon its valve opening is closed by the head of the piston and the speed r r a metal cove "8 i it s s l of the closlng is slowed up to the latchlng polnt. check g ig s gi gggg z z gsgrgg fig I v In accordance with the present invention, the onion he g 5 casing of the check has a substantially rectanp h e c c contamed wlthm the recess c'e'aled, thespring actuated arm l6 beingflcon- 45 I tained Withinthe recess '52, and the'plain sheet 32. When the door is opened, the only part of gular portion having Substantially flat outer the check which is visible is a portion of the t side 24, inner side 26 and end sides 28. The spring actuated arm [6 as hown in Figure I; wall of the spring chamber is substantially cylin- With my improved check by arranging theby drlcal, and as shown substantlallyone-half therepasses l8 atan angle, and arranging the valves} of projects beyond the side 26v of the casing. ZOand 22 vertically with th i upper ends the, j s

' "upper side: of the check casing as shown,"

p the sheet metal cover 38 isrremo ved the valvesf are, conveniently accessible for adjustment to when control the closing action of the door.

As willbe evident to those skilled iritheart; my' invention permits various modifications without departing fromthespirit thereof or the scope ofthe appendedclaimsl' v WhatIelaimisz'jf Q p 1. In a door check; a check easing, a piston V chamber 'in the, casing horizontally arranged,-a

double headed'piston within the chambeigmea'nsl "comprising a spring foroperating the piston dur-s' 'ing the closing of the doo1f,;a:chamber for the spring vertically arranged substantially mid-way between theends of the casing, abypassassociated with each end of thepistonchamber inthe chamber andJbein'gi-spaced at difierent dis- .tancesfromthe end wallfof the chamber-,and a. 'valve-in each ,ot said openings" for controlling ends of said valves b81113 side-of theirdroor and with' theprojectingwportion of said spring chamber received :inza recess 1 in r the door.*'; 1 s l communication between the interior of thepiston it ch'amberand the associated by-pass, the upper p accessible from'thev top side of the check casing;

- 2.}Ina'door check of the type havingi a check in the piston chamberife. springgiflfthejspring chamber, a Vertical .shaft extendlng through the spring chamber connected with I one end i of the spring, connections betweenthe lower end or said 'shaft and the piston for operating the piston,l and a door closing ann secured to the upper end of said shaft; ;the; improvement which consists A one side offthe casing that forms the piston;

chamber being arranged substantially in the plane of the axis of said shaft and the opposite casing formingv a piston chamber horizontally arranged and'a spring, chamber" vertically arranged above the piston chamber; a piston with,- I

sideof said portion of the casing being'in a plane substantially tangent to the outer siderof the Wall of the" springwchamber and means :for' *attachingithe checktoa door with saidlflrstflmen-- T tioned side; of the casing' 'arranged agalnstizthe .25. p cantee s V 

